Maybe I'm not understanding the instructions on how Amen operates. If so, then it is my fault.
I placed the shortcode [amen] and [amen_manage] on the same page where I want the prayers to be shown and logged in users to be able to post prayer requests.
When someone posts a request via the form, the request appears twice. If the page is refreshed, the prayer is again doubled. If I remove the [amen_manage] shortcode and delete the duplicates everything seems to work fine using the Dashboard Amen to enter requests.
For the record, I am using the Atahualpa Version 3.7.10 theme. My browser is Firefox latest version.